They also don't properly delete content that you choose to delete. Photos, check-ins and posts are just archived. I've been through and deleted everything manually on my timeline back to 2007. I noted that certain pages still showed the "counts" of content that had long been deleted:

- http://i.imgur.com/zdwTl.png

- http://i.imgur.com/27RFG.png

I can only assume that a Facebook developer missed the SELECT * FROM checkins WHERE userid = @param0 AND deleted_flag = 0. Deletes are UPDATE checkins SET deleted_flag = 1 WHERE checkinId = @param0.

That developer oversight showed me that Facebook were misusing the term "delete". Every since then I no longer post anything on Facebook. I just keep the account to lurk and use it for OAuth testing on my own apps.

I just noticed FB makes it really tough to clear your Activity Log. Every search/action is stored and if you want to remove items you have to delete them one by one. Clearly this was an evil design decision. It's no value to them, if they can't use your activity log.

not only it is not deleted, people with no facebook accounts already have them. each time you visit a site with like button you are being tracked (see fb patent to track users with social buttons). information from that tracking is being saved into a "virtual" fb account, and if you ever make an account, the virtual one and your new one are being merged